2. a) What is the maximum kinetic energy and speed of an electron ejected from a Na surface, in a photo-electric effect apparatus, when the surface is illuminated by light of wavelength 410 nm? The work function for sodium is 2.28 eV. b) What is the critical frequency below which no electrons are ejected from sodium? c) What is the kinetic energy of electrons emitted when yellow light of λ = 600 nm is incident on Na?

2. a) What is the maximum kinetic energy and speed of an electron ejected from a Na surface, in a photo-electric effect apparatus, when the surface is illuminated by light of wavelength 410 nm? The work function for sodium is 2.28 eV. b) What is the critical frequency below which no electrons are ejected from sodium? c) What is the kinetic energy of electrons emitted when yellow light of λ = 600 nm is incident on Na?

College Physics

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ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

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Question

2. a) What is the maximum kinetic energy and speed of an electron ejected from a Na
surface, in a photo-electric effect apparatus, when the surface is illuminated by light of
wavelength 410 nm? The work function for sodium is 2.28 eV.
b) What is the critical frequency below which no electrons are ejected from sodium?
c) What is the kinetic energy of electrons emitted when yellow light of λ = 600 nm is
incident on Na?
d) Sketch a graph of kinetic energy of the ejected electron vs. frequency of incident light
for the photoelectric effect in sodium. Indicate the work function and critical frequency
on your graph. What is the slope of the graph?

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